A method for evaluating node importance of integrated transportation network

Abstract

The embodiment of the invention provides a method for evaluating node importance of an integrated transportation network, which comprises the following steps: obtaining a city as a node in a topologydiagram, and connecting relationships of various traffic modes among the nodes; acquiring a sub-topological diagram of each mode of transportation between each node and other nodes, and determining the mileage and weight of each mode of transportation; generating the mileage adjacency matrix and weight adjacency matrix corresponding to each sub-topology graph for each mileage and weight of each sub-topology graph; according to the sub-topology graph of each node, generating the total topology graph of the whole composite network, and generating the mileage adjacency matrix and the weight adjacency matrix of the total topology graph; determining the weight of each edge in the total topology graph of the composite network; determining a weighted mileage median and a weighted node degree of the node; according to the weight of weighted node degree and weighted node interfaces determined by expert scoring, determining the importance of nodes in the composite network.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to a method for evaluating the importance of nodes in an integrated transportation network. Background technique [0002] With the development of human society, transportation has become the most basic need of people's life. Whether it is cargo transportation or people's travel, it is inevitable to use the transportation system. Facing the ever-increasing traffic demand, complex and severe natural disasters and social security situation, once the transportation network is blocked, public travel and the transportation of important materials such as electricity, coal, grain, and vegetables, as well as social and economic operations will be seriously affected. In recent years, major emergencies in my country (such as the 2008 southern ice disaster and the 2010 northern heavy snowfall) have occurred frequently, often causing traffic blockages in regional transportatio...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that current static traffic signs can convey limited information and lead to poor use effect, the embodiment of the present invention proposes a data generation method for digital traffic signs, which can transmit various data to intelligent traffic terminals installed on vehicles , to provide support for vehicles to realize active accident prevention and intelligent early warning, and can also play a role in all-round adjustment of traffic flow, traffic control, improvement of road traffic capacity, and reduction of traffic accidents

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